Foot arch supporting structure with adjustable height

Abstract

The utility model discloses a height-adjustable foot arch supporting structure which comprises an installation carrier, the installation carrier is an insole or a sole, a supporting body is arranged at the position, corresponding to a foot arch, of the top face of the installation carrier, and a foot arch supporting face is formed on the top face of the supporting body. A telescopic mechanism is arranged in the mounting carrier below the supporting body, the telescopic end of the telescopic mechanism upwards and movably extends out of the mounting carrier and is connected with the supporting body, and the telescopic mechanism is provided with an adjusting part used for adjusting the telescopic length of the telescopic mechanism and arranged on the side face of the mounting carrier; according to the foot arch supporting structure, the telescopic length of the telescopic mechanism can be adjusted through the adjusting part, and then the lifting height of the foot arch supporting face relative to the installation carrier is adjusted, so that the foot arch supporting face provides a proper supporting function for the foot arch of the foot arch supporting face; the structure is simple, the cost is low, only the space below the foot arch is occupied, the foot sole and heel treading comfort cannot be affected, a wearer can flexibly adjust the supporting effect according to the height of the foot arch, and good practicability is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shoe parts, and particularly relates to an arch support structure with adjustable height. Background Art

[0002] The arch is an upwardly convex arched structure composed of the tarsal bones and metatarsal bones of the foot with ligaments and tendons. When walking, the arch disperses the gravity from the ankle joint through the talus forward to the head of the metatarsal bone and backward to the calcaneus, ensuring the stability of the plantar support when standing upright. Research shows that there is a very close relationship between the differences in individual arch shapes and lower limb sports injuries. Compared with people with normal arch shapes, people with foot valgus and flat feet are more likely to have tibial internal rotation when walking, running or doing other sports, and have a higher risk of knee joint injury. Providing support for the arch is one of the most effective means to reduce this risk. In addition, for plantar fasciitis, which is prone to occur in the middle-aged and elderly groups, orthopedic surgeons of the foot and ankle usually also use arch support for adjuvant treatment. Therefore, providing appropriate support for the arch is particularly important for the health of a person's lower limbs.

[0003] At present, most of the existing arch support shoes or insoles on the market are provided with convex bumps on the inner side (between the two feet) of the sole or insole to support the arch. For example, an arch pillow insole disclosed in Chinese Patent CN205568035U. Such shoes or insoles often can only barely meet the needs of a small number of people. This is because there are certain differences in the arch height of each person, and the combination of different arch heights and foot lengths is numerous. It is also difficult to further subdivide the shoes or insoles according to the arch height under each foot length. A kind of arch height continuously adjustable ankle orthopedic insole disclosed in Chinese Patent CN107440233B. This solution is provided with a height adjustment device under the insole. The height adjustment device includes a fixing member, a driving member and a slider. The fixing member, the driving member and the slider are connected to each other. The horizontally arranged slider slides longitudinally along the fixing member under the drive of the driving member, so as to change the height of the arch support curved surface on the insole body and realize continuous adjustment of the arch support height. This height adjustment device occupies a relatively large longitudinal space of the insole, which is likely to affect the comfort of the sole and heel stepping. It not only has a relatively complex structure but also requires motor drive, with poor reliability and high cost, and poor practicability.

[0004] Therefore, it is necessary to design an arch support structure with simple and flexible support height adjustment, simple and reliable structure, and capable of meeting the support requirements of different arch heights. Summary of the Invention

[0005] Aiming at the above deficiencies of the prior art, the purpose of the present utility model is to provide an arch support structure with adjustable height, solve the technical problems of the existing arch support structure being relatively complex and having a high cost, and achieve the effects of simple use and better meeting the support requirements of different arch heights.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] An arch support structure with adjustable height, including an installation carrier, the installation carrier being an insole or a sole. At a position corresponding to the arch on the top surface of the installation carrier, there is a support body, and the top surface of the support body forms an arch support surface; below the support body, a telescopic mechanism with a lockable telescopic length is provided in the installation carrier. The telescopic end of the telescopic mechanism extends upward and out of the installation carrier and is connected to the support body, so that the height of the arch support surface on the installation carrier changes with the telescopic length of the telescopic mechanism. The telescopic mechanism has an adjustment part for adjusting the telescopic length of the telescopic mechanism and is provided on the side surface of the installation carrier.

[0008] Furthermore, the projection of the support body on the installation carrier is semi-circular and includes a short arc side and a long arc side. The side of the support body where the short arc side is located faces the inner side of the installation carrier, and the arch support surface is a convex arc surface with a height decreasing from the middle of the short arc side to the long arc side.

[0009] Furthermore, the support body is in a sheet shape. The side of the support body where the short arc side is located is higher than the side where the long arc side is located. The side of the support body where the long arc side is located extends along the top surface of the installation carrier to form a limiting part; on the top surface of the installation carrier, there is a receiving groove adapted to the support body. The support body is located in the receiving groove, and a limiting groove adapted to the limiting part is opened on the side wall of the receiving groove. The limiting part is located in the limiting groove to limit the support body on the installation carrier, so that the support body undergoes elastic deformation when the telescopic end expands and contracts; the telescopic end is connected to a position on the bottom surface of the support body close to the middle of the short arc side.

[0010] Furthermore, a contact part is transitionally connected between the side of the support body where the long arc side is located and the limiting part. The contact part extends along the depth direction of the receiving groove and makes the edge of the long arc side of the arch support surface flush with the top surface of the adjacent installation carrier.

[0011] Furthermore, a plurality of gaps are provided at intervals along the long arc side of the limiting part, and the gaps extend to the side of the support body where the long arc side is located.

[0012] Furthermore, an adjustment hole is formed in the top surface of the mounting carrier. An adjustment screw rod that can move along the adjustment hole is provided in the adjustment hole. The adjustment screw rod forms the telescopic end. The upper end of the adjustment screw rod extends out of the adjustment hole and is fixedly connected to the bottom surface of the support body. The adjustment screw rod has an external thread and is threadedly connected with an adjustment nut. The adjustment nut forms the adjustment part. An installation groove communicating with the adjustment hole is formed in the inner side surface of the mounting carrier. The adjustment nut is rotatably arranged in the installation groove. Both ends of the adjustment nut abut against the two side walls of the installation groove respectively. The adjustment nut rotates relative to the adjustment screw rod to adjust the telescopic length of the telescopic mechanism.

[0013] Furthermore, the adjustment nut includes a spline nut and an adjustment wheel. The spline nut is threadedly connected to the adjustment screw rod. The annular adjustment wheel is synchronously rotated and sleeved outside the spline nut. A part of the arc edge of the adjustment wheel is located outside the installation groove. <{

[0014] Furthermore, the upper end of the adjustment screw rod has a connecting head with a rectangular cross-section. The bottom surface of the support body has a connecting groove adapted to the connecting head. The connecting head is located in the connecting groove.

[0015] Furthermore, the connecting groove is a T-shaped groove. The size of the connecting groove opening is adapted to the size of the adjustment screw rod. The connecting groove extends horizontally to the side surface where the short arc edge of the support body is located to form a side mounting port.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. For the height-adjustable arch support structure of the present utility model, the telescopic length of the telescopic mechanism can be adjusted through the adjustment part, and then the height of the arch support surface rising relative to the mounting carrier can be adjusted, so that the arch support surface provides a suitable supporting effect for its own arch. Its structure is relatively simple, the cost is relatively low, and it only occupies the space under the arch and does not affect the comfort of the sole and heel stepping. The adjustment part is arranged on the side of the mounting carrier, making the adjustment and use more convenient. The wearer can flexibly adjust the supporting effect according to the height of his own arch, and has good practicability.

[0018] [[ID=*18]]2. For the height-adjustable arch support structure of the present utility model, the support body for supporting the arch is sheet-shaped and projects as a semi-circular shape on the mounting carrier. The arc curvature of the arch support surface formed on its top surface changes in real time with the deformation. Whether the arch support surface further arches up due to the deformation or returns and falls with the deformation recovery, its arc curvature is dynamically matched with the arch height, and a relatively comfortable supporting effect can be provided for arches of various heights.

[0019] 3. For the height-adjustable arch support structure of the present utility model, the telescopic mechanism is formed by the screw rod and the adjustment nut. It is not only simple and reliable in structure, but also convenient to use and flexible to adjust, and can automatically lock the telescopic length. Description of the Drawings

[0020] Figure 1 The front view of the height-adjustable arch support structure described in the embodiment;

[0021] Figure 2 The exploded view of the height-adjustable arch support structure described in the embodiment;

[0022] Figure 3 The top view of the height-adjustable arch support structure described in the embodiment;

[0023] Figure 4 When the arch support surface described in the embodiment is at a low position, it is in Figure 3 The schematic cross-sectional view along A-A;

[0024] Figure 5 When the arch support surface described in the embodiment is at a high position, it is in Figure 3 The schematic cross-sectional view along A-A;

[0025] Wherein, the mounting carrier 1, the accommodating groove 11, the mounting groove 12, the adjusting hole 13; the support body 2, the connecting groove 21, the limiting portion 22, the abutting portion 23, the notch 24; the adjusting screw 31, the spline nut 32, the adjusting wheel 33, the connecting head 34. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Embodiment

[0027] Please refer to Figure 1 and Figure 3 A height-adjustable arch support structure includes a mounting carrier 1. The mounting carrier 1 is an insole or a sole. A support body 2 is provided at a position corresponding to the arch on the top surface of the mounting carrier 1. The top surface of the support body 2 forms an arch support surface. A telescopic mechanism with a lockable telescopic length is provided in the mounting carrier 1 below the support body 2. The telescopic end of the telescopic mechanism extends upward and out of the mounting carrier 1 and is connected to the support body 2, so that the height of the arch support surface on the mounting carrier 1 changes with the telescopic length of the telescopic mechanism. The telescopic mechanism has an adjustment portion for adjusting the telescopic length of the telescopic mechanism and provided on the side surface of the mounting carrier 1.

[0028] The height-adjustable arch support structure of the present utility model uses an insole or a sole as the mounting carrier 1, a support body 2 is provided at the position corresponding to the arch, and the height of its top surface is adjusted by a telescopic mechanism within the mounting carrier 1; when wearing a shoe with this arch support structure, the wearer can adjust the telescopic length of the telescopic mechanism through the adjustment part, and further adjust the height of the arch support surface relative to the mounting carrier 1 rising, so that the arch support surface provides a suitable support for the wearer's own arch; the arch support structure is relatively simple and has a low cost, only occupying the space below the arch, and does not affect the comfort of the sole and heel stepping. The adjustment part of the telescopic mechanism is arranged on the side of the mounting carrier 1, making the adjustment and use more convenient. The wearer can flexibly adjust the support effect according to the height of his own arch, and has good practicability.

[0029] Please refer to Figure 3 , to make the support body 2 provide a more uniform and comfortable support for the arch, the top surface (arch support surface) of the support body 2 is designed to match the shape of the depression formed by the arch on the sole of the foot, specifically as follows: the projection of the support body 2 on the mounting carrier 1 is a semi-circular shape (crescent shape) and includes a short arc side and a long arc side. The side where the short arc side of the support body 2 is located faces the inner side of the mounting carrier 1 (the inner side refers to the side of the mounting carrier 1 facing between the two legs), and the arch support surface is a convex arc surface with a height decreasing from the middle of the short arc side to the long arc side.

[0030] During implementation, the support body 2 can be designed as a block, and the support effect is adjusted by changing the height of the support body 2 relative to the carrier through the telescopic mechanism. And to make the arch support surface have a larger height adjustment range (mainly the lower limit of the height), and to limit and guide the lifting and lowering of the support body 2 relative to the mounting carrier 1, a receiving groove 11 adapted to the support body 2 can be opened on the top surface of the mounting carrier 1, and the support body 2 is placed in the receiving groove 11; Please refer to Figure 1 and Figure 2, in this embodiment, the support body 2 is designed as a sheet with a thickness much smaller than that of the block, and an elastic material such as spring steel, thermoplastic elastomer, stainless steel or polyurethane is used. The side where the short arc edge of the support body 2 is located is higher than the side where the long arc edge is located, that is, the side where the short arc edge of the support body 2 is located does not extend downward to make the support body 2 in an inverted bowl shape; the side where the long arc edge of the support body 2 is located forms a limiting portion 22 along the top surface of the mounting carrier 1. There is a receiving groove 11 adapted to the support body 2 on the top surface of the mounting carrier 1. The support body 2 is located in the receiving groove 11. A limiting groove adapted to the limiting portion 22 is provided on the side wall of the receiving groove 11. The limiting portion 22 is located in the limiting groove. The upper end of the telescopic end is connected to a position near the middle of the short arc edge of the bottom surface of the support body 2; in this way, the receiving groove 11 not only enables the arch support surface to have a larger height adjustment range, but also restricts the root of the support body 2 in the receiving groove 11 through the cooperation of the limiting groove and the limiting portion 22, so that the support body 2 can undergo elastic deformation when the telescopic end expands and contracts, thereby changing the height of the arch support surface relative to the top surface of the mounting carrier 1 to adjust the support effect; in addition, for the block-shaped support body 2, the arc curvature of the arch support surface formed on its top surface is fixed. When the arch is relatively low, even if the support body 2 is lowered, there is an easy feeling of rubbing the feet. For the sheet-shaped support body 2, the arc curvature of the arch support surface formed on its top surface changes in real time with the deformation. Whether the arch support surface further arches due to the deformation or returns and falls with the recovery of the deformation, its arc curvature is dynamically matched with the arch height, and a relatively comfortable support effect can be provided for arches of various heights.

[0031] Please refer to Figure 2 and Figure 3 , to further limit the root of the support body 2 and prevent the support body 2 from being pushed out of the receiving groove 11 when the telescopic end moves upward, a contact portion 23 is also provided for transitional connection between the side where the long arc edge of the support body 2 is located and the limiting portion 22. The contact portion 23 extends along the depth direction of the receiving groove 11; in addition, in the depth direction of the receiving groove 11, the size of the contact portion 23 is designed to be the same as the distance between the upper edge of the limiting groove and the top surface of the mounting carrier 1, so that the edge where the long arc edge of the arch support surface is located is flush with the adjacent top surface of the mounting carrier 1, in order to avoid a drop at the connection between the top surface of the mounting carrier 1 and the arch support surface, which is beneficial to improving the comfort of stepping.

[0032] Please refer to Figure 2 and Figure 3 , a plurality of gaps 24 are provided at intervals along the long arc edge of the limiting portion 22, and the gaps 24 extend to the side where the long arc edge of the support body 2 is located; in this way, the gaps 24 provide space for the deformation of the root of the support body 2, so as to facilitate the elastic deformation of the support body 2 as the telescopic end expands and contracts.

[0033] Please refer to Figure 1 and Figure 2 , in this embodiment, the telescopic mechanism adopts the following structural form:

[0034] On the top surface of the mounting carrier 1, an adjustment hole 13 is provided. Inside the adjustment hole 13, an adjustment screw 31 that can move along the adjustment hole 13 is provided. The adjustment screw 31 forms the telescopic end. The upper end of the adjustment screw 31 extends out of the adjustment hole 13 and is fixedly connected to the bottom surface of the support body 2. The adjustment screw 31 has an external thread and is threadedly connected with an adjustment nut. The adjustment nut forms the adjustment part. An installation groove 12 communicating with the adjustment hole 13 is opened on the inner side surface of the mounting carrier 1. The adjustment nut is rotatably arranged in the installation groove 12 and abuts up and down. In this way, the screw and the adjustment nut form a mechanism similar to a screw drive. However, the difference is that in this telescopic mechanism, the vertical position of the nut is restricted by the installation groove 12, and the mounting carrier 1 with the adjustment hole 13 can be regarded as the fixed end of the telescopic mechanism;

[0035] To facilitate a clearer understanding of the arch support structure described in the present invention, its operating principle is introduced as follows: Figure 4 As shown, it is the state where the arch support surface is at a low position, that is, the position of the adjustment screw 31 in the adjustment hole 13 is lower, and the connection part between the support body 2 and the adjustment screw 31 abuts against the top surface of the mounting carrier 1; when it is necessary to raise the arch support, the adjustment nut can be turned with the pulp of the finger, so that the adjustment screw 31 rotates and rises in the adjustment hole 13, applying an upward force to the support body 2 to cause it to undergo elastic deformation, thereby raising the arch support surface. Figure 5 As shown, it is the state where the arch support surface is at a high position; this telescopic mechanism is not only convenient to use, flexible to adjust, but also can automatically lock the telescopic length.

[0036] Please refer to Figure 2 and Figure 3 , in this embodiment, the adjustment nut includes a spline nut 32 and an adjustment wheel 33. The spline nut 32 is threadedly connected to the adjustment screw 31. The annular adjustment wheel 33 is coaxially sleeved outside the spline nut 32. A part of the arc edge of the adjustment wheel 33 is located outside the installation groove 12 for turning with the pulp of the finger; in this way, both the adjustment nut and the screw are made of metal materials to ensure the structural strength, and the adjustment wheel 33 can be made of plastic materials to reduce weight and for styling design. The spline nut 32 is used as an insert and integrally injection molded with the adjustment wheel 33 to be integrated to achieve synchronous rotation.

[0037] Please refer to Figure 1 and Figure 2 , the upper end of the adjustment screw 31 has a connection head 34 with a rectangular cross-section. The bottom surface of the support body 2 has a connection groove 21 adapted to the connection head 34. The connection head 34 is located in the connection groove 21; in this way, through the cooperation of the connection head 34 and the connection groove 21, the rotation of the adjustment screw 31 relative to the support body 2 is restricted, so as to turn the adjustment wheel 33 to make the adjustment screw 31 move along the adjustment hole 13.

[0038] Please refer to Figure 1and Figure 2 The connecting groove 21 is a T-shaped groove, and the size of the connecting groove 21 mouth is adapted to the size of the adjusting screw 31. The connecting groove 21 extends horizontally to the side of the short arc edge on the support body 2 to form a side mounting opening; in this way, after the connecting head 34 is installed into the connecting groove 21 through the side mounting opening during assembly, under the cooperation of the connecting head 34 and the connecting groove 21, the adjusting screw 31 can neither rotate relative to the support body 2 nor move vertically relative to the connecting groove 21 of the support body 2, thereby achieving the effect of fixed connection between the telescopic end and the support body 2, so that the support body 2 can be elastically deformed by adjusting the screw 31, thereby adjusting the height of the arch support surface.

[0039] In addition, the height-adjustable arch support structure is used on an insole, that is, when the mounting carrier 1 is an insole, a space that is compatible with the protruding part of the adjusting wheel 33 can be left between the shoe body and the insole to avoid interference, or the adjusting nut can be completely placed in the mounting groove 12. When adjustment is needed, the insole is taken out and the adjusting nut is moved with a fingernail or other tool; the height-adjustable arch support structure is used on a sole, that is, when the mounting carrier 1 is a sole, the mounting carrier 1 is surrounded by materials such as leather or cloth to form a shoe body, the support body is located on the inner side of the shoe body, and the adjusting wheel 33 is located below the shoe body and partially protrudes from the side of the sole. Since the side of the sole where the adjusting wheel 33 is located is concave corresponding to the arch of the foot, even if the adjusting wheel 33 is partially protruding, it is not easy to be accidentally touched when walking; for shoes with waterproof requirements, a sealing gasket can be set between the end face of the adjusting wheel 33 and the corresponding side wall of the mounting groove 12, and the spline nut 32 and the adjusting screw 31 are matched with fine threads to try to prevent water from seeping into the shoe through the mounting groove 12 and the adjustment hole 13.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A height-adjustable arch support structure, characterized by: The mounting carrier comprises a mounting carrier, the mounting carrier being an insole or a sole, a support body being provided at a position on the top surface of the mounting carrier corresponding to the arch of the foot, and the top surface of the support body forming a support surface for the arch of the foot; A telescopic mechanism with a lockable telescopic length is provided within the mounting carrier below the support body. The telescopic end of the telescopic mechanism is movable upward and extended outside the mounting carrier and connected to the support body, so that the height of the arch support surface on the mounting carrier changes with the telescopic length of the telescopic mechanism. The telescopic mechanism has an adjustment portion provided on the side of the mounting carrier for adjusting the telescopic length of the telescopic mechanism. The projection of the support body on the mounting carrier is crescent-shaped and includes a short arc side and a long arc side. The side of the support body where the short arc side is located faces the inner side of the mounting carrier, and the arch support surface is an outward convex arc surface with a height decreasing from the middle of the short arc side to the long arc side.

2. The height-adjustable arch support structure according to claim 1, characterized in that: The support body is in the shape of a sheet, and the side surface of the support body where the short arc edge is located is higher than the side surface where the long arc edge is located, and the side surface of the support body where the long arc edge is located extends along the top surface of the mounting carrier to form a limiting portion; a receiving groove adapted to the support body is provided on the top surface of the mounting carrier, and the support body is located in the receiving groove, and a limiting groove adapted to the limiting portion is provided on the side wall of the receiving groove, and the limiting portion is located in the limiting groove to limit the support body to the mounting carrier, so that the support body undergoes elastic deformation when the telescopic end is extended and retracted; the telescopic end is connected to a position on the bottom surface of the support body near the middle of the short arc edge.

3. The height-adjustable arch support structure according to claim 2, characterized in that: There is an abutment portion at the transition between the side surface of the support body where the long arc edge is located and the limiting portion. The abutment portion extends along the depth direction of the accommodating groove and makes the edge of the long arc edge on the arch support surface flush with the top surface of the adjacent installation carrier.

4. A height-adjustable arch support structure according to claim 2 or 3, characterized in that: The limiting portion is provided with a plurality of notches at intervals along the long arc edge, and the notches extend to the side surface of the supporting body where the long arc edge is located.

5. The height-adjustable arch support structure according to claim 2, characterized in that: An adjustment hole is provided on the top surface of the mounting carrier, and an adjustment screw that can move along the adjustment hole is provided in the adjustment hole. The adjustment screw forms the telescopic end, and the upper end of the adjusting screw extends out of the adjustment hole and is fixedly connected to the bottom surface of the support body. The adjusting screw has an external thread and is threadedly connected to an adjusting nut. The adjusting nut forms the adjustment portion, and a mounting groove connected to the adjustment hole is provided on the inner side surface of the mounting carrier. The adjusting nut can be rotatably arranged in the mounting groove, and the two ends of the adjusting nut are respectively abutted against the two side walls of the mounting groove. The adjusting nut rotates relative to the adjusting screw to adjust the telescopic length of the telescopic mechanism.

6. The height-adjustable arch support structure according to claim 5, characterized in that: The adjusting nut includes a spline nut and an adjusting wheel. The spline nut is threadedly connected to the adjusting screw. The annular adjusting wheel is synchronously rotated and sleeved on the outside of the spline nut. A part of the arc edge of the adjusting wheel is located outside the mounting groove.

7. The height-adjustable arch support structure according to claim 5, characterized in that: The upper end of the adjusting screw rod is provided with a connecting head with a rectangular cross section, the bottom surface of the supporting body is provided with a connecting groove matched with the connecting head, and the connecting head is located in the connecting groove.

8. The height-adjustable arch support structure according to claim 7, characterized in that: The connecting groove is a T-shaped groove, the size of the connecting groove opening is adapted to the size of the adjusting screw, and the connecting groove extends laterally to the side surface of the supporting body where the short arc edge is located to form a side mounting opening.

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